from stock to custom rom

hi there!! I have a sgs3 4g and want to install a custom room and ive searched but didnt find any good step by step guide.
so can u help me with installing custom rom?
explain from beginning to the end please(i mean root,install cmw,custom rom and so on)
thankful for all answers!

hi there!! I have a sgs3 4g and want to install a custom room and ive searched but didnt find any good step by step guide.
so can u help me with installing custom rom?
explain from beginning to the end please(i mean root,install cmw,custom rom and so on)
thankful for all answers!

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